15-Minute White Miso Soup with Chard and Tofu

Prep: 5 minCook: 10 min2 servingsmediumJapanese
15-Minute White Miso Soup with Chard and Tofu

A quick, nourishing Japanese-inspired soup featuring mild white miso, tender chard, and cubed tofu in vegetable broth. Perfect for a light lunch or as a starter for Asian meals. The addition of nori seaweed provides authentic umami depth, while green onions add fresh bite. This version uses firm tofu for heartier texture, though silken can be substituted for traditional smoothness. Ready in just 15 minutes, it's an ideal weeknight comfort food that's both satisfying and restorative.

Ingredients

2 servings
  • 4 cups vegetable broth
    dashi1:1pescatarian

    more authentic Japanese flavor

    Full guide →
  • 1 sheet nori, cut into large rectangles(optional)
  • 3 Tbsp white or yellow miso paste
  • ½ cup green chard, chopped
    spinach or kale1:1vegetarianvegan

    works well but adjust cooking time

  • ½ cup green onion, chopped
  • ¼ cup firm tofu, cubed
    silken tofu1:1vegetarianvegan

    add at end of cooking for traditional texture

    Full guide →

Instructions

  1. 1

    Place vegetable broth in a medium saucepan and bring to a low simmer

  2. 2

    Place miso into a small bowl, add a little hot water and whisk until smooth to prevent clumping

  3. 3

    Add chard, green onion, and firm tofu to the broth and cook for 5 minutes

  4. 4

    Add nori and stir, then remove from heat

  5. 5

    Add miso mixture and stir to combine

  6. 6

    Taste and adjust with more miso or sea salt if desired

  7. 7

    Serve warm

Tips

Tip 1

Whisk miso with hot water before adding to prevent clumping in the soup

Tip 2

Add silken tofu at the end of cooking to prevent it from breaking apart

Tip 3

Use dashi instead of vegetable broth for a more traditional Japanese flavor

Good to Know

Storage

Refrigerate up to 3 days, reheat gently without boiling

Make Ahead

Can prepare miso mixture and chop vegetables up to 1 day ahead

Serve With

Serve immediately while hot, garnish with extra green onions if desired

See pairing guide →

Common Mistakes

Watch

Whisk miso with hot water first to avoid lumps forming in the soup

Watch

Don't boil after adding miso to preserve its beneficial enzymes

Watch

Add silken tofu last to prevent it from breaking apart

Substitutions

Vegan Options

firm tofu
silken tofu1:1vegetarianvegan

add at end of cooking for traditional texture

Full guide →
green chard
spinach or kale1:1vegetarianvegan

works well but adjust cooking time

white miso
red miso1:1vegetarianvegan

stronger, saltier flavor

General Alternatives

vegetable broth
dashi1:1pescatarian

more authentic Japanese flavor

Full guide →
Find more substitutions →

FAQ

Can I use red miso instead of white miso?

Yes, but red miso has a stronger, saltier flavor so start with less and adjust to taste. It will give the soup a deeper, more robust flavor.

How long does leftover miso soup keep?

Store in the refrigerator for up to 3 days. Reheat gently without boiling to preserve the miso's beneficial properties and prevent curdling.

Can I freeze miso soup?

Freezing isn't recommended as the tofu texture changes and miso can separate. It's best enjoyed fresh or within a few days of making.